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Electrochemical impedance spectroscopy of a porous graphite electrode used for Li-ion batteries with EC/PC based electrolytes

Foss, Carl Erik Lie; Svensson, Ann Mari; Sunde, Svein; Vullum-Bruer, Fride
Journal article, Peer reviewed
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EISstudyofECPCbasedelectrolytes.doc (322Kb)
URI
http://hdl.handle.net/11250/2389474
Date
2012
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  • Institutt for materialteknologi [1561]
  • Publikasjoner fra CRIStin - NTNU [19694]
Original version
ECS Transactions 2012, 41(21):1-6   10.1149/1.3695095
Abstract
Electrochemical impedance spectroscopy has been employed to investigate different electrolyte compositions used for lithium-ion batteries. Diffusion coefficients in ethylene carbonate (EC) was estimated to be in order of 10-7-10-11 cm2/s, depending on the state of charge (SOC), and propylene carbonate (PC) based electrolytes has been estimated to be in the order 10-10-10-11 cm2/s. Lithium bis(oxalato) borate (LiBOB) was used as an additive in the PC electrolytes to prevent exfoliation.
Publisher
Electrochemical Society
Journal
ECS Transactions

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